John (Jack) Handyside Barnes (1922-1985)
Jack Barnes

John (Jack) Handyside Barnes (1922-1985) was an Australian medical practitioner and toxinologist. 1964 the first specimens of the small stinger Carukia barnesi (Irukandji)

Toxicology-Library-Toxin-340
Irukandji Jellyfish

Irukandji Syndrome - originally a mystery was solved by some self experimentation of Dr Jack Barnes, his nine-year old son and local surf lifesaver. He proved that the thumbnail sized carybdeid (or four tentacled box jellyfish) could cause Irukandji syndrome but placing it on all three of them.